There is a distance between what we mean and what we say-between one mind and another-that no language can truly cross.The invisible prison is a reflection on that distance. Written in the first person, it moves through failure, solitude, love, and silence with honesty and calm precision. Noureldin Abdelsalam observes how communication decays under noise, how people mistake performance for understanding, and how real connection survives-not through speech, but through attention.This is not a book of despair. It's a book of clarity. It suggests that when words collapse, something purer remains: the quiet truth of being seen without needing to be understood.A meditation for those who think too deeply, feel too much, and have learned that sometimes the truest language is silence itself.